Agent skill
azure-functions
Expert knowledge for Azure Functions development including troubleshooting, best practices, decision making, architecture & design patterns, limits & quotas, security, configuration, integrations & coding patterns, and deployment. Use when building HTTP/event-triggered apps, Durable Functions, Flex/Consumption hosting, containerized Functions, or CI/CD deployments, and other Azure Functions related development tasks. Not for Azure App Service (use azure-app-service), Azure Logic Apps (use azure-logic-apps), Azure Container Apps (use azure-container-apps), Azure Kubernetes Service (AKS) (use azure-kubernetes-service).
Install this agent skill to your Project
npx add-skill https://github.com/MicrosoftDocs/Agent-Skills/tree/main/skills/azure-functions
Metadata
Additional technical details for this skill
- generator
- docs2skills/1.0.0
- generated at
- 2026-04-05
SKILL.md
Azure Functions Skill
This skill provides expert guidance for Azure Functions. Covers troubleshooting, best practices, decision making, architecture & design patterns, limits & quotas, security, configuration, integrations & coding patterns, and deployment. It combines local quick-reference content with remote documentation fetching capabilities.
How to Use This Skill
IMPORTANT for Agent: Use the Category Index below to locate relevant sections. For categories with line ranges (e.g.,
L35-L120), useread_filewith the specified lines. For categories with file links (e.g.,[security.md](security.md)), useread_fileon the linked reference file
IMPORTANT for Agent: If
metadata.generated_atis more than 3 months old, suggest the user pull the latest version from the repository. Ifmcp_microsoftdocstools are not available, suggest the user install it: Installation Guide
This skill requires network access to fetch documentation content:
- Preferred: Use
mcp_microsoftdocs:microsoft_docs_fetchwith query stringfrom=learn-agent-skill. Returns Markdown. - Fallback: Use
fetch_webpagewith query stringfrom=learn-agent-skill&accept=text/markdown. Returns Markdown.
Category Index
| Category | Lines | Description |
|---|---|---|
| Troubleshooting | L37-L59 | Diagnosing and fixing Durable Functions/Task SDK issues, AZFD/AZFW error codes, storage and config problems, and runtime/deployment errors for Node.js, Python, and VM start/stop functions. |
| Best Practices | L60-L79 | Patterns and guidance for robust, performant Azure Functions and Durable Functions: orchestration/entity design, versioning, error handling, DI, HTTP/connection usage, scaling, and language-specific best practices. |
| Decision Making | L80-L99 | Guidance on choosing Functions hosting, scaling, networking, runtime/language versions, estimating costs, and migrating apps from older runtimes, AWS Lambda, or Express.js APIs |
| Architecture & Design Patterns | L100-L105 | Running Functions in Linux containers, Durable Functions design with Azure Storage, and hosting Functions on Azure Container Apps for scalable, container-based architectures. |
| Limits & Quotas | L106-L115 | Details on Functions hosting limits: legacy and Flex Consumption plans, scaling behavior, concurrency and target-based scaling settings, and supported languages/versions. |
| Security | L116-L131 | Securing Functions apps: encryption at rest, storage and endpoint access, private networking, managed identities for triggers/bindings/SQL, roles, and Web PubSub/MCP security. |
| Configuration | L132-L163 | Configuring Azure Functions apps: bindings, host/app settings, plans, networking, tracing/monitoring, Durable Functions, Core Tools/local dev, runtime versions, and run-from-package setup. |
| Integrations & Coding Patterns | L164-L272 | Patterns and how-tos for wiring Functions to external systems (HTTP, data stores, messaging, AI/OpenAI, Dapr, MCP, APIs) using triggers, input/output bindings, and integration extensions |
| Deployment | L273-L302 | Deploying and updating Azure Functions: provisioning hosting (ARM/Bicep/Terraform), containers/Kubernetes/Container Apps, CI/CD (GitHub/Azure Pipelines), scaling, zero‑downtime, and migration tasks. |
Troubleshooting
Best Practices
Decision Making
Architecture & Design Patterns
| Topic | URL |
|---|---|
| Run Azure Functions in Linux containers | https://learn.microsoft.com/en-us/azure/azure-functions/container-concepts |
| Host Azure Functions on Azure Container Apps | https://learn.microsoft.com/en-us/azure/azure-functions/functions-container-apps-hosting |
Limits & Quotas
| Topic | URL |
|---|---|
| Use Azure Functions legacy Consumption plan | https://learn.microsoft.com/en-us/azure/azure-functions/consumption-plan |
| Understand event-driven scaling limits in Azure Functions | https://learn.microsoft.com/en-us/azure/azure-functions/event-driven-scaling |
| Understand Azure Functions Flex Consumption hosting | https://learn.microsoft.com/en-us/azure/azure-functions/flex-consumption-plan |
| Configure concurrency behavior in Azure Functions | https://learn.microsoft.com/en-us/azure/azure-functions/functions-concurrency |
| Use target-based scaling for Azure Functions triggers | https://learn.microsoft.com/en-us/azure/azure-functions/functions-target-based-scaling |
| Review supported languages and versions for Azure Functions | https://learn.microsoft.com/en-us/azure/azure-functions/supported-languages |
Security
Configuration
Integrations & Coding Patterns
Deployment
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